An in vitro study to find the incidence of mesiobuccal 2 canal in permanent maxillary first molars using three different methods

Abstract

Aim:In-vitro study was done to evaluate the incidence of MB2 canals using three different methods (CBCT, CLINICAL ANALYSIS AND DENTAL LOUPES) and to compare the efficacy of the three methods in identifying the incidence of MB2 canals in maxillary permanent first molars.Materials and Methods:The study sample consisted of 120 extracted intact permanent maxillary molars. These extracted teeth were subjected to CBCT. Later the teeth were access opened with naked eye to find the incidence of MB2 canal, and then the teeth were visualised under dental loupe to locate MB2 canal if they were missed under naked eye. Results was statistically analysed by Mc Nemar's tests with Bonferroni correction, Chi square test and Cochran's Q test.Result:CBCT showed high incidence (68.3%) of MB2 canal in maxillary first molars and it showed to be a reliable method in detecting MB2 canal. When compared to dental loupe (52.5%) and naked eye (25%), the dental loupe improved the detection of MB2 canal.Conclusion:Within the parameter of this study in detecting the incidence of MB2 canal, using CBCT dental loupes and naked eye, detection of MB2 canal was significantly higher with CBCT followed by dental loupe and least with naked eye.

The Frequency of Mesio Buccal Second Canals in Permanent Maxillary First Molar Using Different Methods: A Cross-Sectional Study

“…Buhrley et al have found frequencies of MB2 canals in upper 1st molar teeth with the use of magnification were reported to be more as compared to the number found on clinical examination. In vitro studies, conducted to identify the presence of MB2 with and without the use of magnification device, also shown the results in accordance with our study (more number of MB2 are visible under magnification) [20][21][22] . The least percentages were reported by Hassan and Nizar among the Sudanese population 23 .…”

Micro-CT evaluation of maxillary first molars: interorifice distances and internal anatomy of the mesiobuccal root

“…1,2,33 MB2 usually has more atresia and its patency cannot be easily achieved compared with the main canal (MB1). 3,5,6 Consequently, overlooking the presence of MB2 is associated with endodontic treatment failure and with the occurrence of periapical lesions. 1,2,3 Declaration of Interests: The authors certify that they have no commercial or associative interest that represents a conflict of interest in connection with the manuscript.…”

“…13,14 Anatomically, the "critical apical zone" includes the apical third of the root canal, the apical foramen, and its branches (apical foramina or accessory and secondary canal foramina) located within the 3-5 mm root apex. 2,3,5,13 This area is problematic to manage, and available technologies, i.e., cone-beam computed tomography (CBCT) and dental operating microscope (DOM), present limitations and questionable sensitivity in detecting these complexities. 7,15,16 Micro-computed tomography (micro-CT) is considered a superior method for the investigation of root canal anatomy in ex vivo studies, as it provides greater anatomical detail and quantitative data compared to other imaging methods, and avoids the destruction of the specimen.…”

“…This non-invasive technique keeps the specimen intact and allows detailed two-or three-dimensional (3D) reconstruction, providing quantitative and qualitative information on external/internal anatomy. 2,5,13,14 Most recently, several micro-CT studies on the anatomical complexity of the RCS have been used as the basis for the development of more efficient methods and protocols for irrigating solutions applied in mandibular molars. 7,9,17,18,19 However, there is a gap in the literature about the investigation into the isthmus and apical anatomy of maxillary molars using micro-CT. 12,20,21 This micro-CT study aimed to describe the morphometric relationship of root canal orifices on the pulp floor in the presence/absence of MB2 and some aspects of the internal anatomy of the MB root, including isthmus and the apical canal system anatomy.…”

Prevalence of second canal in the mesiobuccal root of permanent maxillary molars from a Turkish subpopulation: a cone-beam computed tomography study

“…The MB2 canals are visualised by histological sections [44], diaphanisation [17], magnifying loupes [41], endodontic surgical microscope [26], scanning electron microscope [44], periapical radiography [40], micro-computed tomographic analysis [27,51], and cone-beam computed tomography (CBCT) [7-9, 57, 58]. However, some of these techniques are invasive, disadvantageous and can only be used to investigate extracted teeth [50]. Nowadays, CBCT has become more widely used because it can provide more reliable diagnostics in the field of endodontics [11,23,34] and can perform morphological analysis of the root canal system [9,30,32,37,58].…”